What must occur twice in terms of intersection/passing through features?

The requirement for something to occur at least twice highlights the importance of consistency and repetition in synchro skating routines. This means that particular elements, like intersections or passing through features, need to be demonstrated multiple times throughout the performance to showcase the team's ability to execute these moves effectively.

Having this repetition ensures that judges can assess the execution and precision of these elements under various circumstances during the routine. It also emphasizes the cohesiveness and synchronization of the team, as they must coordinate their movements tightly to perform these features multiple times successfully.

While different skaters participating or the same skater performing can be part of the overall dynamic of the routine, the requirement focused on occurs twice directly addresses the essential nature of showcasing these specific features repeatedly in the choreography. Thus, the emphasis on multiple occurrences serves to enhance the technical difficulty and artistic expression of the performance, ultimately influencing scoring and evaluation in competitions.